1002222212220 has 72 divisors (see below), whose sum is σ = 3069589382496. Its totient is φ = 264664501632.

The previous prime is 1002222212203. The next prime is 1002222212267. The reversal of 1002222212220 is 222122222001.

1002222212220 is a `hidden beast` number, since 1 + 0 + 0 + 222 + 221 + 2 + 220 = 666.

1002222212220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1002222212193 and 1002222212202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27010107 + ... + 27047186.

It is an arithmetic number, because the mean of its divisors is an integer number (42633185868).

Almost surely, 2^{1002222212220} is an apocalyptic number.

1002222212220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002222212220 is an abundant number, since it is smaller than the sum of its proper divisors (2067367170276).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1002222212220 is a wasteful number, since it uses less digits than its factorization.

1002222212220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54057411 (or 54057406 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 1002222212220 its reverse (222122222001), we get a palindrome (1224344434221).

The spelling of 1002222212220 in words is "one trillion, two billion, two hundred twenty-two million, two hundred twelve thousand, two hundred twenty".